new file mode 100644
--- /dev/null
+++ b/src/pt-jump.h
@@ -0,0 +1,91 @@
+/*
+
+Copyright (C) 1996, 1997 John W. Eaton
+
+This file is part of Octave.
+
+Octave is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+Octave is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with Octave; see the file COPYING.  If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+#if !defined (octave_tree_jump_h)
+#define octave_tree_jump_h 1
+
+#if defined (__GNUG__)
+#pragma interface
+#endif
+
+class tree_walker;
+
+#include "pt-cmd.h"
+
+// Break.
+
+class
+tree_break_command : public tree_command
+{
+public:
+
+  tree_break_command (int l = -1, int c = -1)
+    : tree_command (l, c) { }
+
+  ~tree_break_command (void) { }
+
+  void eval (void);
+
+  void accept (tree_walker& tw);
+};
+
+// Continue.
+
+class
+tree_continue_command : public tree_command
+{
+public:
+
+  tree_continue_command (int l = -1, int c = -1)
+    : tree_command (l, c) { }
+
+  ~tree_continue_command (void) { }
+
+  void eval (void);
+
+  void accept (tree_walker& tw);
+};
+
+// Return.
+
+class
+tree_return_command : public tree_command
+{
+public:
+
+  tree_return_command (int l = -1, int c = -1)
+    : tree_command (l, c) { }
+
+  ~tree_return_command (void) { }
+
+  void eval (void);
+
+  void accept (tree_walker& tw);
+};
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; End: ***
+*/